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From what I've learned about ottos - they need a group. I can't advise about whether your list will lead to future harmony or not, though. That's also a lotta fish for that sized tank - I assume you aren't necessarily looking to put everything in but want to know what would work together?

the goal was to put all that in it i was asking around from what i understand it should work out fine. i do 25-30% water changes weekly and have 2217 filter hoping this would all work. and yeah i know Otto's need to be in group i might just cut them out all together n get a few more snails.
so far the Harlequins and cardinals get along great.The rams im haveing great luck with they are vey very peaceful i been reading they uslay bug the cory's but im having none of this everyone is doing great im currently trying to get my Harlequins and cardinals to 10/10 but im haveing a hard time with finding a good stock of these the ones i been finding don't look that great ._. .My angel is the best fish in the world too No aggression towards anything at all! but we will see what happens as the tank ages i tried to get all the more aggressive/semi aggressive fish 1st in hopes they will grow n be used to it they are all young fish.

yeah if i start seeing agression i will probly end up takeing some back but im hopeing this works out good cause atm the Harquins stay at the top,Cardinals are middle,n cories are bottom n wall crazy things the rams stay towards bottom too while angel wanders everywhere. idk if congo is middle or top but im thinking it should work being where they stay and such.
Also i`ve kind of been thinking of cutting out the Harlequins im not sure yet just because i can`t really find any good ones but im not sure yet ._.

I'm wondering why you are willing to take the chance on the aggression part - I mean, stressed out fish can become ill and infect other fish - you never know what stress could bring on and with that many fish in there, it could be difficult to single out the "bad guys" to remove it or them from the tank.

Just as a starting point, here is what AQAdvisor has for your current stocking list (what is in your tank now) and filtration:

Warning: Chinese Algae Eater is too aggressive to co-exist with Cardinal Tetra.Warning: At least 5 x Harlequin Rasbora are recommended in a group.Warning: Chinese Algae Eater is too aggressive to co-exist with Harlequin Rasbora.Note: Chinese Algae Eater will become incredibly aggressive and destructive when they become adults.Warning: Chinese Algae Eater is not recommended for your tank - it may eventually outgrow your tank space, potentially reaching up to 11 inches.Warning: Your selected species may eventually require 170% of your aquarium space. You may need to deal with territorial aggressions later on. Try removing some of (Corydoras panda, Mikrogeophagus ramirezi, Pterophyllum scalare, Gyrinocheilus aymonieri) or get a larger tank.

Warning: Chinese Algae Eater is too aggressive to co-exist withCardinal Tetra.Note: Chinese Algae Eater will become incredibly aggressive and destructive when they become adults.Warning: Chinese Algae Eater is not recommended for your tank - it may eventually outgrow your tank space, potentially reaching up to 11 inches.Warning: Congo Tetra will likely to fin nip Angelfish.Warning: Your selected species may eventually require 174% of your aquarium space. You may need to deal with territorial aggressions later on. Try removing some of (Corydoras panda, Mikrogeophagus ramirezi, Pterophyllum scalare, Gyrinocheilus aymonieri) or get a larger tank.

Your aquarium filtration capacity for above selected species is 108%.
Recommended water change schedule: 38% per week.Your aquarium stocking level is 134%.Your tank is overstocked. Unless you are an experienced aquarist who can meet the maintenance/biological needs of this aquarium, lower stocking levels are recommended.

It is the same with the Eheim 2217, better filtration but the same overstocking %. I have 42 fish in my 75 gal and I am at my limit.

Sounds like you need to trade in the Chinese Algae Eater, IME once they reach a certain size; they become the terror of the tank as gronlaura researched.

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i already planned on returning the algea Eater i already could tell its going to end up being a problem.Also on the Congo i was told they are very peaceful? if they are nippers i gota look towards something else and it looks like i should not do the Harlequins for some reason the book i have on them says 76-80 on there tempt.Also what are u useing for that info? 0.o

Like i said before i was asking around on forums before settling on this and i was being told that this setup would end up fine (besides for chinese)